The Lompoc earthquake (MS = 7.3) of November 4, 1927, which was originally located 80 km west of Point Arguello, has been relocated much closer to the coast of central California near Point Sal. P-wave arrival times at regional and teleseismic distances are used to determine the epicenter at 34.9°N, 120.7°W near the Hosgri fault, with a 52-km major axis for the 95 per cent confidence ellipse. This location is in close agreement with arrival times of several phases at seismographs located at Berkeley and Mount Hamilton. S-P time intervals from the first 36 hr of aftershocks recorded at Santa Barbara constrain the limits of the aftershock zone and support a near coastal location of the fault rupture.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not have access to this content, please speak to your institutional administrator if you feel you should have access.